When you come to the end of your rope, tie a knot and hang on.

It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.

To reach a port we must set sail –
Sail, not tie at anchor
Sail, not drift.

One must be sane to think clearly, but one can think deeply and be quite insane.

The sole difference between myself and a madman is the fact that I am not mad!

Now this is the point. You fancy me a mad. Madmen know nothing. But you should have seen me. You should have seen how wisely I proceeded...